Photo of the Day 7 November 2007

Surf on Beach, Canary Islands, 2006
Photograph by Justin Guariglia
Surf spreads a foamy swath over a black beach in Gomera in Spain's Canary Islands. Gomera's tortuous geography—desert lowlands twist upwards into a soaring cloud forest—initiated the evolution of silbo, an indigenous six-note whistling language that allows the island's residents to efficiently communicate over hill and vale.